From 5d3a0b14c0439beab8e3af946dec88fddc07f896 Mon Sep 17 00:00:00 2001
From: Ryuta Kamizono <kamipo@gmail.com>
Date: Fri, 1 Jul 2016 16:10:27 +0900
Subject: Pass `pk: false` to `connection.insert` explicitly if do not have a
 primary key

Because causing an extra query by `sql_for_insert` for guessing a
primary key.
https://github.com/rails/rails/blob/v5.0.0/activerecord/lib/active_record/connection_adapters/postgresql/database_statements.rb#L121-L125
---
 activerecord/lib/active_record/relation.rb | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

(limited to 'activerecord/lib')

diff --git a/activerecord/lib/active_record/relation.rb b/activerecord/lib/active_record/relation.rb
index 7a1552856b..93baa882ad 100644
--- a/activerecord/lib/active_record/relation.rb
+++ b/activerecord/lib/active_record/relation.rb
@@ -65,7 +65,7 @@ module ActiveRecord
       @klass.connection.insert(
         im,
         'SQL',
-        primary_key,
+        primary_key || false,
         primary_key_value,
         nil,
         binds)
-- 
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